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ToolImageProvider.java
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ToolImageProvider.java
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/*******************************************************************************
* Copyright (c) 2019, 2024 Obeo.
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.components.compatibility.emf.diagrams;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.sirius.components.emf.EPackageService;
import org.eclipse.sirius.components.compatibility.services.diagrams.api.IToolImageProvider;
import org.eclipse.sirius.components.core.api.IObjectService;
import org.eclipse.sirius.diagram.description.AbstractNodeMapping;
import org.eclipse.sirius.diagram.description.DiagramElementMapping;
import org.eclipse.sirius.diagram.description.EdgeMapping;
import org.eclipse.sirius.diagram.description.tool.ContainerCreationDescription;
import org.eclipse.sirius.diagram.description.tool.EdgeCreationDescription;
import org.eclipse.sirius.diagram.description.tool.NodeCreationDescription;
import org.eclipse.sirius.ecore.extender.business.api.accessor.EcoreMetamodelDescriptor;
import org.eclipse.sirius.ecore.extender.business.internal.accessor.ecore.EcoreIntrinsicExtender;
import org.eclipse.sirius.viewpoint.description.tool.AbstractToolDescription;
import org.springframework.stereotype.Service;
/**
* Class used to compute the image of a tool.
*
* @author pcdavid
* @author sbegaudeau
*/
@Service
public class ToolImageProvider implements IToolImageProvider {
private static final String ICON_PATH = "iconPath";
private static final String ICON = "icon";
private static final Pattern SEPARATOR = Pattern.compile("(::?|\\.)");
private final IObjectService objectService;
private final EPackage.Registry ePackageRegistry;
public ToolImageProvider(IObjectService objectService, EPackage.Registry ePackageRegistry) {
this.objectService = Objects.requireNonNull(objectService);
this.ePackageRegistry = Objects.requireNonNull(ePackageRegistry);
}
@Override
public List<String> getIcon(AbstractToolDescription abstractToolDescription) {
var optionalImagePathFromIconPath = this.getImagePathFromIconPath(abstractToolDescription);
return optionalImagePathFromIconPath.map(List::of).orElseGet(() -> this.getImagePathFromDomainClass(abstractToolDescription));
}
private Optional<String> getImagePathFromIconPath(AbstractToolDescription abstractToolDescription) {
var optionalIconPathEAttribute = Optional.ofNullable(abstractToolDescription.eClass().getEStructuralFeature(ICON_PATH));
if (optionalIconPathEAttribute.isEmpty()) {
optionalIconPathEAttribute = Optional.ofNullable(abstractToolDescription.eClass().getEStructuralFeature(ICON));
}
// @formatter:off
return optionalIconPathEAttribute.map(abstractToolDescription::eGet)
.filter(String.class::isInstance)
.map(String.class::cast)
.filter(iconPath -> !iconPath.isBlank())
.map(this::normalize);
// @formatter:on
}
private String normalize(String iconPath) {
String path = iconPath;
if (!iconPath.startsWith("/")) {
path = "/" + iconPath;
}
int index = path.indexOf('/', 1);
if (index != -1) {
path = path.substring(index);
}
return path;
}
private List<String> getImagePathFromDomainClass(AbstractToolDescription abstractToolDescription) {
var optionalInstance = this.getMappings(abstractToolDescription).stream()
.map(this::getDomainClass)
.flatMap(Optional::stream)
.filter(domainClass -> !domainClass.isBlank())
.findFirst()
.flatMap(this::getInstance);
return optionalInstance.map(this.objectService::getImagePath).orElse(List.of());
}
private List<DiagramElementMapping> getMappings(AbstractToolDescription abstractToolDescription) {
List<DiagramElementMapping> mappings = new ArrayList<>();
if (abstractToolDescription instanceof NodeCreationDescription) {
mappings.addAll(((NodeCreationDescription) abstractToolDescription).getNodeMappings());
} else if (abstractToolDescription instanceof ContainerCreationDescription) {
mappings.addAll(((ContainerCreationDescription) abstractToolDescription).getContainerMappings());
} else if (abstractToolDescription instanceof EdgeCreationDescription) {
mappings.addAll(((EdgeCreationDescription) abstractToolDescription).getEdgeMappings());
}
return mappings;
}
private Optional<String> getDomainClass(DiagramElementMapping diagramElementMapping) {
Optional<String> optionalDomainClass = Optional.empty();
if (diagramElementMapping instanceof AbstractNodeMapping) {
AbstractNodeMapping mapping = (AbstractNodeMapping) diagramElementMapping;
optionalDomainClass = Optional.ofNullable(mapping.getDomainClass());
} else if (diagramElementMapping instanceof EdgeMapping) {
EdgeMapping mapping = (EdgeMapping) diagramElementMapping;
if (mapping.isUseDomainElement()) {
optionalDomainClass = Optional.ofNullable(mapping.getDomainClass());
}
}
return optionalDomainClass;
}
private Optional<EObject> getInstance(String domainClass) {
Matcher matcher = SEPARATOR.matcher(domainClass);
if (matcher.find()) {
String packageName = domainClass.substring(0, matcher.start());
String className = domainClass.substring(matcher.end());
var optionalEPackage = new EPackageService().findEPackage(this.ePackageRegistry, packageName);
if (optionalEPackage.isPresent()) {
EPackage ePackage = optionalEPackage.get();
EcoreIntrinsicExtender ecoreIntrinsicExtender = new EcoreIntrinsicExtender();
ecoreIntrinsicExtender.updateMetamodels(List.of(new EcoreMetamodelDescriptor(ePackage)));
EObject instance = ecoreIntrinsicExtender.createInstance(className);
return Optional.ofNullable(instance);
}
}
return Optional.empty();
}
}